3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Making TOWING power without boxes/tuners...

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Old 01-04-2007 | 10:30 AM
  #16  
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I think you should take a look at the 1st Gens. Sounds like you really want a nice '93 12V to work on!
Old 01-04-2007 | 10:53 AM
  #17  
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Originally Posted by jrussell
I think you should take a look at the 1st Gens. Sounds like you really want a nice '93 12V to work on!
Yeah, I like the simplicity of yesteryear. Imagine if I had bought a Powerjoke or that other truck...
Old 01-04-2007 | 11:11 AM
  #18  
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HOV, there's nothing better than getting more power and better fuel mileage. That's what you will get by just changing the turbo and injectors. It's safer than a fueling box and you will get better mileage as long as you don't get huge tips. I had the 40hp Flux1s on my 03 and saw a 1 mpg increase immediately. The additional power was from idle up so it doesn't wait till you are building boost then violently make the power like some of these boxes do.
I guess I am saying that I disagree with you.....

On the other hand, injectors and turbos aren't cheap.....
Old 01-04-2007 | 07:13 PM
  #19  
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i think if you get rid of the fan and go to electric it would help alot! but dont know what cfm is needed to cool one of these monsters .they makem for the duramax but thats it
Old 01-05-2007 | 08:11 AM
  #20  
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Originally Posted by Dodgezilla
HOV, there's nothing better than getting more power and better fuel mileage. That's what you will get by just changing the turbo and injectors. It's safer than a fueling box and you will get better mileage as long as you don't get huge tips. I had the 40hp Flux1s on my 03 and saw a 1 mpg increase immediately. The additional power was from idle up so it doesn't wait till you are building boost then violently make the power like some of these boxes do.
I guess I am saying that I disagree with you.....

On the other hand, injectors and turbos aren't cheap.....
Ok, I concede to your greater experience. My previous experience with turbos was with Subaru gassers, and it would run like complete dog poo if you made physical changes without changing the EM... especially a turbo and injector upgrade!
Old 01-05-2007 | 09:41 AM
  #21  
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Originally Posted by HOV
On modern vehicles, any physical modification should have a corresponding modification in engine management.

Doing physical mods only was a fine way of doing business back in the 1970's, when engines didn't rely on computers to monitor and run everything. Now, anytime a physical mod is done, it changes the parameters of operation and can actually make the engine run less efficiently if the engine management isn't changed to match the physical mod.

Exhaust and final drive gearing are potential options that wouldn't cause much havoc. Smaller wheels and tires and lower gearing for more final drive torque? Lose the muffler?

IMHO, changing the turbo and injectors without modifying engine management for the changes is dangerous, expensive, and inefficient.
This sounds very similar to Banks philosophy. I know that a lot of folks poo poo Banks and I am in no way a Banks advocate but he does make engine and computer mods for "safe power". Might be worth checking into but I know that his stuff is not cheap. As for me I plan on leaving it stock. These trucks make plenty of pulling power, the limiting factor is stopping power. I mean these trucks are capable of pulling heavy loads over mountain passes way better than a gasser, its the stopping the load that worries me, exhaust break or not.
Old 01-05-2007 | 05:59 PM
  #22  
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Someone posted, they put in 50 hp injectors only and dynoed 83 more hp instead of just 50. Injectors, turbo, exh. and intake makes darn good sense to me! Craig
Old 01-06-2007 | 05:29 AM
  #23  
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I can also tell you that my 07, with just the turbo and no injectors or fueling box, is much stronger that it was with the stock turbo.
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